System and control method for reserved charge of battery for vehicle

• US 9,522,607 B2
• Filed: 11/06/2014
• Issued: 12/20/2016
• Est. Priority Date: 03/14/2014
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Kim, Woo Sung, Min, Kyung In
• Primary Examiner(s): Cheung, Calvin
• Assistant Examiner(s): SHUDY, ANGELINA M
• Application Number:
  US14/535,222
• Publication Number:
  US 20150258909A1
• Time in Patent Office: 775 Days
• Field of Search: 701/22, 701/36, 320/155, 320/157
• US Class Current: 1/1
• CPC Class Codes: B60H 1/00392 for electric vehicles having only electric drive means
• CPC Class Codes: B60H 1/00778 the input being a stationary vehicle position, e.g. parking or stopping
• CPC Class Codes: B60L 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations

Abstract

A system and control method for reserved charge of a vehicle battery is provided. The method includes receiving, at a controller, a vehicle operation start time input and a reserved charge command via an input device and receiving information regarding an output state of a charger when the vehicle is connected to the charger. In addition, the controller calculates an estimated charging time consumed for charging the battery using the information on the output state of the charger and calculates a charge start time for completing the battery charge before a vehicle operation starts based on the vehicle operation start time and the estimated charging time. The vehicle is operated to be in a standby state before the charge until the charge start time is reached and the charge is adjusted to charge the battery with power input from the charger when the charge start time is reached.

Claims

1. A control method for a reserved charge of a battery for a vehicle, comprising:

receiving a vehicle operation start time and a reserved charge command input when a reserved charge function is turned on via an input device to completely charge the battery prior to the vehicle operation start time;

receiving, at a controller, information regarding an output state of a charger when the vehicle is connected to the charger in response to receiving the vehicle operation start time and the reserved charge command;

calculating, by the controller, an estimated charging time consumed for charging the battery using the information regarding the output state of the charger;

calculating, by the controller, a charge start time for completing the charging of the battery before a vehicle operation starts based on the vehicle operation start time and the estimated charging time;

operating, by the controller, the vehicle to be in a standby state before the charging until the charge start time reaches; and

adjusting, by the controller, the charging to charge the battery with power input from the charger when the charge start time is reached in the standby state.

2. The control method of claim 1, wherein the information regarding the output state is charging current and voltage values output by the charger.

3. The control method of claim 2, wherein information regarding the charging current and voltage values is received from the charger via communication with the charger, or information regarding sensed current and voltage values actually output from the charger to the vehicle by operating the vehicle to be in a temporal charge state while receiving the information regarding the output state of the charger.

4. The control method of claim 1, comprising:

in response to receiving an input of a reserved air conditioning command for adjusting an internal temperature of the vehicle before a start of the vehicle operation together with the reserved charge command via the input device, calculating, by the controller, the charge start time for starting the reserved charge of the battery based on the vehicle operation start time, the estimated charging time, an air conditioning time; and

performing, by the controller, reserved air conditioning of operating an air conditioning device of the vehicle before the start of the vehicle operation after completion of the charging of the battery.

5. The control method of claim 1, wherein the input device is a vehicle terminal or a portable terminal connected to the vehicle terminal, and is configured to transmit the estimated charging time calculated using the information regarding the output state of the charger for the reserved charge to display the estimated charging time on the vehicle terminal or the portable terminal.

6. The control method of claim 1, wherein when the charger is a low-speed charger, the estimated charging time is calculated by calculating an average current value that corresponds to an output voltage of the charger in the information regarding the output state of the charger from map data, and then using a maximum capacity of the battery, information regarding an initial SOC of the battery, the average current value, and the output voltage of the charger.

7. The control method of claim 1, wherein when the charger is a high-speed charger, a time value that corresponds to an initial SOC of the battery, an initial temperature of the battery, and rated output power of the charger, which is information input from the charger, is obtained from map data, and the time value obtained from the map data is corrected using an actual output power value obtained by multiplying a charging current and a charging voltage, output by the charger, as the information regarding the output state to calculate the estimated charging time.

8. The control method of claim 7, wherein the estimated charging time is calculated by correcting the time value obtained from the map data by multiplying the time value and a weighted value, and the weighted value is calculated based on a ratio value of the rated output power and the actual output power.

9. A control system for reserved charge of a battery for a vehicle, comprising:

a memory configured to store program instructions; and

a processor configured to execute the program instructions, the program instructions when executed configured to;

receive a vehicle operation start time and a reserved charge command input when a reserved charge function is turned on via an input device to completely charge the battery prior to the vehicle operation start time;

receive information regarding an output state of a charger when the vehicle is connected to the charger in response to receiving the vehicle operation start time and the reserved charge command;

calculate an estimated charging time consumed for charging the battery using the information regarding the output state of the charger;

calculate a charge start time for completing the charging of the battery before a vehicle operation starts based on the vehicle operation start time and the estimated charging time;

operate the vehicle to be in a standby state before the charging until the charge start time reaches; and

adjust the charging to charge the battery with power input from the charger when the charge start time is reached in the standby state.

10. The system of claim 9, wherein the information regarding the output state is charging current and voltage values output by the charger.

11. The system of claim 10, wherein information regarding the charging current and voltage values is information received from the charger via communication with the charger, or information regarding sensed current and voltage values actually output from the charger to the vehicle by operating the vehicle to be in a temporal charge state while receiving the information regarding the output state of the charger.

12. The system of claim 9, wherein the program instructions when executed are further configured to:

calculate the charge start time for starting the reserved charge of the battery based on the vehicle operation start time, the estimated charging time, an air conditioning time in response to receiving an input of a reserved air conditioning command for adjusting an internal temperature of the vehicle before a start of the vehicle operation together with the reserved charge command via the input device; and

perform reserved air conditioning of operating an air conditioning device of the vehicle before the start of the vehicle operation after completion of the charging of the battery.

13. The system of claim 9, wherein the input device is a vehicle terminal or a portable terminal connected to the vehicle terminal, and is configured to transmit the estimated charging time calculated using the information regarding the output state of the charger for the reserved charge to display the estimated charging time on the vehicle terminal or the portable terminal.

14. The system of claim 9, wherein when the charger is a low-speed charger, the estimated charging time is calculated by calculating an average current value that corresponds to an output voltage of the charger in the information regarding the output state of the charger from map data, and then using a maximum capacity of the battery, information regarding an initial SOC of the battery, the average current value, and the output voltage of the charger.

15. The system of claim 9, wherein when the charger is a high-speed charger, a time value that corresponds to an initial SOC of the battery, an initial temperature of the battery, and rated output power of the charger, which is information input from the charger, is obtained from map data, and the time value obtained from the map data is corrected using an actual output power value obtained by multiplying a charging current and a charging voltage, output by the charger, as the information regarding the output state to calculate the estimated charging time.

16. A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:

program instructions that receive a vehicle operation start time and a reserved charge command input when a reserved charge function is turned on via an input device to completely charge the battery prior to the vehicle operation start time;

program instructions that receive information regarding an output state of a charger when the vehicle is connected to the charger in response to receiving the vehicle operation start time and the reserved charge command;

program instructions that calculate an estimated charging time consumed for charging the battery using the information regarding the output state of the charger;

program instructions that calculate a charge start time for completing the charging of the battery before a vehicle operation starts based on the vehicle operation start time and the estimated charging time;

program instructions that operate the vehicle to be in a standby state before the charging until the charge start time reaches; and

program instructions that adjust the charging to charge the battery with power input from the charger when the charge start time is reached in the standby state.

17. The non-transitory computer readable medium of claim 16, wherein the information regarding the output state is charging current and voltage values output by the charger.

18. The non-transitory computer readable medium of claim 17, wherein information regarding the charging current and voltage values is information received from the charger via communication with the charger, or information regarding sensed current and voltage values actually output from the charger to the vehicle by operating the vehicle to be in a temporal charge state while receiving the information regarding the output state of the charger.

19. The non-transitory computer readable medium of claim 16, further comprising:

program instructions that calculate the charge start time for starting the reserved charge of the battery based on the vehicle operation start time, the estimated charging time, an air conditioning time in response to receiving an input of a reserved air conditioning command for adjusting an internal temperature of the vehicle before a start of the vehicle operation together with the reserved charge command via the input device; and

program instructions that perform reserved air conditioning of operating an air conditioning device of the vehicle before the start of the vehicle operation after completion of the charging of the battery.

20. The non-transitory computer readable medium of claim 16, wherein the input device is a vehicle terminal or a portable terminal connected to the vehicle terminal, and is configured to transmit the estimated charging time calculated using the information regarding the output state of the charger for the reserved charge to display the estimated charging time on the vehicle terminal or the portable terminal.